code: def test_named_array_multi_second(self):
      a = named_array.NamedNumpyArray(
          [[1, 3], [6, 8]], [None, ["a", "b"]]
      )
      self.assertArrayEqual(a[0], [1, 3])
      self.assertEqual(a[0, 1], 3)
      self.assertEqual(a[0, "a"], 1)
      self.assertEqual(a[0, "b"], 3)
      self.assertEqual(a[1, "b"], 8)
      self.assertEqual(a[0].a, 1)
      self.assertArrayEqual(a[a > 2], [3, 6, 8])
      self.assertArrayEqual(a[a % 3 == 0], [3, 6])
      with self.assertRaises(TypeError):
          a.a  # pylint: disable=pointless-statement
      self.assertArrayEqual(a[None, :, "a"], [[1, 6]])
  
imports: import collections
  import enum
  import pickle
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  from pysc2.lib import named_array
label_desc: Use image node_id 6 for calling the NamedArrayTest obj's underlying member method code with example usage: obj.test_named_array_multi_second() without return types